12V Heavy Duty Magnetic Towing Trailer 2 Light Kit with Wire Harness - National Standard Products&reg; (1) Easily Mounts to any Tow Vehicle! Takes the Hassle out of Installing Towing Lights! Large 4-1/4 in. Diameter Lenses - Amber on one side - Red on the other side Double-sided Scratch Resistant Lenses with Red and Amber Flashers 20 ft. wiring harness, 7 ft. between lights National Standard  is the only authorized seller of this product on Amazon.com